package com.itheima.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.common.CustomException;
import com.itheima.entity.Category;
import com.itheima.entity.Dish;
import com.itheima.entity.Employee;
import com.itheima.entity.Setmeal;
import com.itheima.mapper.CategoryMapper;
import com.itheima.mapper.EmployeeMapper;
import com.itheima.service.CategoryService;
import com.itheima.service.DishService;
import com.itheima.service.EmployeeService;
import com.itheima.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
        @Autowired
        private DishService dishService;
        @Autowired
        private SetmealService setmealService;
    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id查询
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count1=dishService.count(dishLambdaQueryWrapper);

        //查询当前分类是否关联菜品，如果已关联，则抛出业务一场
        if(count1>0){
        throw new CustomException("已经关联菜品，不能删除");
        }
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id查询
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count2=setmealService.count(setmealLambdaQueryWrapper);

        //查询当前分类是否关联菜品，如果已关联，则抛出业务一场
        if(count2>0){
            throw new CustomException("已经关联套餐，不能删除");
        }
        super.removeById(id);


    }
}
